Beta Williamson County, TX only — data and coverage are limited during early access.

10 TIMBERLINE DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,780 sqftBuilt 1976

Property at a Glance

This home is estimated between $239,698 and $371,206, with a best estimate of $336,941. That places the property below the R427578G - Hidden Acres & Sec 2 median of $412,870, in a neighborhood that declined 4.2% over the past year.

Estimated Value Range

$239,698 $371,206
Best Estimate
$336,941
WCAD Value
$378,547
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $239,698 and $371,206. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

14 TIMBERLINE DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,599 sqft Built 1979
Raw Value $340,653
Adjusted Value $342,936

Adjusted +$38,493 for 181 sqft more living space and -$36,210 for being older. Net adjustment: +$2,283.

6 TIMBERLINE DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,040 sqft Built 1983
Raw Value $379,480
Adjusted Value $239,698

Adjusted -$55,293 for 260 sqft less living space and -$84,489 for being older. Net adjustment: -$139,782.

12 TIMBERLINE DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,750 sqft Built 1978
Raw Value $354,701
Adjusted Value $336,941

Adjusted +$6,380 for 30 sqft more living space and -$24,140 for being older. Net adjustment: -$17,760.

18 TIMBERLINE DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 1 bath 1,697 sqft Built 1979
Raw Value $389,765
Adjusted Value $371,206

Adjusted +$17,651 for 83 sqft more living space and -$36,210 for being older. Net adjustment: -$18,559.

4 bed 2 bath 1,836 sqft Built 1994
Raw Value $503,855
Adjusted Value $274,689

Adjusted -$11,909 for 56 sqft less living space and -$217,257 for being older. Net adjustment: -$229,166.

The Neighborhood

This home is valued 8.3% below the R427578G - Hidden Acres & Sec 2 median of $412,870. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.2% over the past year.

R427578G - Hidden Acres & Sec 2

typical
19 Properties
$412,870 Median Value
-4.2% YoY Change
26% Have Pool
84% Have Garage
This Home
$378,547
Median
$412,870

This home is -8.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,781 across all districts. With a homestead exemption claimed, that drops to $4,461 — saving $1,320 per year. That's $372 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,381
Williamson CountyCounty0.3694%$1,399
Austin Community Collegespecial0.1034%$391
Williamson County ESD #9 - Round RockESD0.0999%$378
Williamson County FM/RdCounty0.0443%$168
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$5,781

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $336,941 would pay approximately $2,103 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

View full property details